diff --git a/ci-scripts/oai-ci-vm-tool b/ci-scripts/oai-ci-vm-tool
index f3192b1e4b..6c8ae9ad25 100755
--- a/ci-scripts/oai-ci-vm-tool
+++ b/ci-scripts/oai-ci-vm-tool
@@ -456,7 +456,7 @@ RUN_OPTIONS="none"
 
 
 # list of variables that can be set via the --setvar option
-AUTHORIZED_VAR=("VM_OSREL RUN_EXPERIMENTAL")
+AUTHORIZED_VAR=("VM_OSREL RUN_EXPERIMENTAL OPTIONAL_APTCACHER")
 
 
 #variables to set which OS VM should use